<!DOCTYPE html>
<html>
  <body>
     <table style="position: absolute; top: 100px; left: 100px;">
       <tr>
         <td>
           <div style="position: absolute; left: 20px; top: 20px; background: black; height: 20px; width: 20px"></div>
         </td>
       </tr>
  </body>
</html>
